Alaska Science Center
Rupture through the Canwell Glacier
The November 3, 2002, Mw7.9 Denali Fault earthquake produced about 340 km of surface rupture along the Susitna Glacier Thrust Fault and the right-lateral, strike-slip Denali and Totschunda Faults. Digital photogrammetric methods were primarily used to create a 1:500-scale, three-dimensional surface rupture map, and 1:6,000-scale aerial photographs were used for three-dimensional digitization in ESRI’s ArcMap GIS software, using Leica’s StereoAnalyst plug in. Points were digitized 4.3 m apart, on average, for the entire surface rupture. Earthquake-induced landslides, sackungen, and unruptured Holocene fault scarps on the eastern Denali Fault were also digitized where they lay within the limits of air photo coverage. This digital three-dimensional fault-trace map is superior to traditional maps in terms of relative and absolute accuracy, completeness, and detail and is used as a basis for three-dimensional visualization. Field work complements the air photo observations in locations of dense vegetation, on bedrock, or in areas where the surface trace is weakly developed. Seventeen km of the fault trace, which broke through glacier ice, were not digitized in detail due to time constraints, and air photos missed another 10 km of fault rupture through the upper Black Rapids Glacier, so that was not mapped in detail either.
Download the text as a 13-page PDF (ds422_text.pdf; 5.9 MB)
Download the map as a 36" x 19" PDF (ds422_fig3_DF_bigmap.pdf; 31.6 MB)
Google® Earth files; this package consists of a folder that contains two .kml files and two .kmz files with which you can add the data from this report to your copy of Google® Earth (google_earth_files.zip; 5.3 MB compressed; 6 MB uncompressed)
Readme file that contains descriptions of the digital dataset files (DFrupture_readme.txt; 56 kB)
Metadata for: air photos (DFrupture_meta_DFairphotos.txt; 64 kB), kilometers (DFrupture_meta_DFkilometers.txt; 64 kB), and lines (DFrupture_meta_DFlines.txt; 72 kB)
Shape files (DFrupture_shape.zip; 3.6 MB compressed; 19.6 MB uncompressed)
Database (DFrupture_mdb.zip; 34.5 MB compressed; 249 MB uncompressed)
Topos (DFrupture250ktopos.zip; 24.8 MB compressed; 209 MB uncompressed)
Style file (DFrupture.style; 3.2 MB)
gen files (DFrupture_gen.zip; 2.6 MB compressed; 11.2 MB uncompressed)
For questions about the content of this report, contact Peter Haeussler
Suggested citation and version history
Download a free copy of the current version of Adobe Reader.
| Help
| PDF help
| Western reports main page | Western Data Series reports |
| Geologic
Division | Alaska Science Center
|
This report is available only on the Web
U.S. Department of the Interior | U.S. Geological Survey
URL: https://pubs.usgs.gov/ds/422/
Page Contact Information: Michael Diggles
Page Created: February 6, 2009
Page Last Modified: February 6, 2009
(mfd)
